Spike ring



FIG. 1 is a top perspective view of a spike ring in accordance with the present invention.

FIG. 2 is a reduced top view of the spike ring of FIG. 1.

FIG. 3 is a bottom view of FIG. 2.

FIG. 4 is a right side view of FIG. 2.

FIG. 5 is a front view of FIG. 2; and,

FIG. 6 is rear view of FIG. 2. 

CLAIM The ornamental design for a spike ring, as shown and described. 